- Music roll
A music roll is a storage medium used to operate a mechanical musical instrument. They are used for the player piano, mechanical organ, electronic carillon and various types of orchestrion. The vast majority of music rolls are made of paper. Other materials that have been utilized include thin card (Imhof-system), thin sheet brass (Telektra-system), composite multi-layered electro-conductive aluminium and paper roll (Triste-system) and, in the modern era, thin plastic or PET film.
The music data is stored by means of perforations. The mechanism of the instrument reads these as the roll unwinds, using a pneumatic, mechanical or electrical sensing device called a tracker bar, and the mechanism subsequently plays the instrument.
After a roll is played, it is necessary for it to be rewound before it can be played again. This necessitates a break in a musical performance. To over come this, some instruments were built with two player mechanisms allowing one roll to play while the other rewinds.
Each hole is connected to a valve in the interior of the organ which operates the organ pipes such as these wooden ones.
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music roll — noun : a roll of paper on which music for a player piano is recorded in perforations that actuate the keys by regulating the flow of air from a bellows * * * a roll of perforated paper for actuating a player piano. [1905 10] * * * music roll noun … Useful english dictionary
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music roll — a roll of perforated paper for actuating a player piano. [1905 10] * * * … Universalium
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